WD Easystore 4TB External USB 3.0 Hard Drive Black X307140

Easystore software installed for ease of use: Allows you to configure, manage, and diagnose your drive.Automatic backup: WD Backup software works quietly in the background to help preserve your data using minimal PC resources. Select automatic, continuous or scheduled backup option to instantly back up your files.Data transfer rates up to 5 Gbps with USB 3.0Compatible with PC and MacIncludes: WD easystore 4TB External USB 3.0 Hard Drive, USB cable, AC adapter, Owner's manual